HS2AA Equivalent & Substitute Parts

Part Overview

The HS2AA is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 1.5 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active and is currently in production inventory with 829 pieces available.

Substitute parts become necessary when the primary part reaches end-of-life status, experiences supply constraints, or when design requirements mandate alternative manufacturers or packaging formats. The HS2AA maintains full electrical and mechanical compatibility with identified substitute components that share identical electrical ratings and package specifications.

Substiute Parts

HS2AA

Taiwan Semiconductor CorporationIn Stock: 913HS2AA Datasheet

Current PartRFQ

HS2AA R3G

Taiwan Semiconductor CorporationIn Stock: 2628HS2AA R3G Datasheet

Parametric EquivalentRFQ

US2AA

onsemiIn Stock: 15116US2AA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HS2AA is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Voltage - DC Reverse (Vr) (Max): 50 V
• Current - Average Rectified (Io): 1.5 A
• Voltage - Forward (Vf) (Max) @ If: 1 V @ 1.5 A
• Reverse Recovery Time (trr): 50 ns
• Current - Reverse Leakage @ Vr: 5 µA @ 50 V
• Capacitance @ Vr, F: 50 pF @ 4V, 1MHz
• Package / Case: DO-214AC, SMA
• Operating Temperature - Junction: -55°C to 150°C
• Technology: Standard
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

All identified substitute parts maintain identical electrical performance characteristics and package specifications. Packaging format variations (Tape & Reel versus Cut Tape) do not affect electrical compatibility and reflect only supply chain and manufacturing differences.

Parameter Comparison

Engineering Selection Recommendations

HS2AA R3G (Taiwan Semiconductor Corporation)

The HS2AA R3G is a direct parametric equivalent supplied in Cut Tape packaging format. This part maintains identical electrical specifications and thermal operating range. The product status indicates discontinuation at DiGi Electronics; however, 2600 pieces remain in current inventory. Selection of this substitute is appropriate for applications where packaging format flexibility is acceptable and supply availability is prioritized.

US2AA (onsemi)

The US2AA is a direct parametric equivalent manufactured by onsemi, supplied in Tape & Reel format matching the primary part's packaging specification. This component carries AEC-Q101 automotive qualification and is rated for automotive-grade applications. Product status is classified as Not For New Designs, indicating the manufacturer has transitioned this part to legacy status. Current inventory of 15100 pieces provides substantial supply availability. Selection of this substitute is appropriate for existing production lines or applications where automotive qualification is required and legacy component status is acceptable.

Both substitute parts satisfy all electrical and mechanical requirements for direct replacement of the HS2AA. Selection between substitutes depends on packaging format requirements, automotive qualification necessity, and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can HS2AA R3G be used as a direct replacement for HS2AA?

A: Yes. The HS2AA R3G maintains identical electrical specifications including voltage rating (50 V), current rating (1.5 A), forward voltage drop (1 V @ 1.5 A), reverse recovery time (50 ns), and reverse leakage current (5 µA @ 50 V). Both components use the DO-214AC (SMA) package and operate across the same temperature range (-55°C to 150°C). The only difference is packaging format: HS2AA R3G is supplied in Cut Tape while HS2AA is supplied in Tape & Reel. This packaging difference does not affect electrical compatibility.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) and Cut Tape (CT) are supply formats that affect component handling and automated assembly processes. Tape & Reel provides components on continuous carrier tape wound on reels, suitable for high-volume automated pick-and-place equipment. Cut Tape provides components on shorter tape segments, suitable for lower-volume assembly or manual handling. Electrical and mechanical specifications remain identical between formats.

Q: Can US2AA replace HS2AA in new designs?

A: US2AA maintains identical electrical and mechanical specifications for direct replacement. However, US2AA carries a product status of Not For New Designs, indicating the manufacturer recommends against incorporation into new development projects. For new designs, HS2AA (Active status) or HS2AA R3G should be prioritized. US2AA is appropriate for sustaining production of existing designs or legacy applications.

Q: Does US2AA automotive qualification affect its use in non-automotive applications?

A: No. AEC-Q101 automotive qualification indicates the component meets automotive industry reliability and testing standards. This qualification does not restrict use in non-automotive applications. Components qualified to automotive standards are suitable for general-purpose applications and typically exhibit equivalent or superior reliability characteristics compared to non-qualified equivalents.

Q: Are all three parts RoHS3 compliant?

A: Yes. HS2AA, HS2AA R3G, and US2AA are all ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the Moisture Sensitivity Level (MSL) for these diodes?

A: All three parts carry MSL 1 (Unlimited), indicating unlimited shelf life without moisture control measures. These components do not require special moisture-barrier packaging or desiccant storage conditions.